z4m roadster - upgrades

[djhs]

noticing that you can pick up a 6m old low mileage Z4M roadster for £34k - thats £12k off list - I find myself thinking for that money its irrelevent whether its as good as a Boxster S which would cost nearly £10k more! Does anyone know whether 19inch CSL wheels will fit? most negative comments on the car seem to revolve around understeer and brakes, I reckon 3 grand spent on bigger wheels, michelin pilot sports and AP racing front brakes solves that...bit like the Z4M coupe in EVO. any thoughts?